The Indiana State Line is the boundary that separates the state of Indiana from its neighboring states. To the north, it borders Michigan, while to the east, it meets Ohio. The line is defined by a series of straight and curved segments, following natural landmarks and historical survey lines. This state line plays a significant role in defining the legal and political jurisdictions of Indiana. It affects various aspects such as taxation, law enforcement, and transportation. Travelers crossing the Indiana State Line may notice welcome signs that indicate their entry into the state, marking a transition in culture and geography.